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MC34921

Features: · Two Functionally Identical Pulse-Width Modulated (PWM) DC Motor Drivers· ·One Switching, One Linear, and One Dual-Mode Regulator· Dual Mode Switching/Linear 5.0 V Regulator· Supervisory Functions (Power-ON Reset and Error Reset Circuitry)· 8-Channel, 8-Bit Analog-to-Digital Converter (...

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SeekIC No. : 004415949 Detail

MC34921: Features: · Two Functionally Identical Pulse-Width Modulated (PWM) DC Motor Drivers· ·One Switching, One Linear, and One Dual-Mode Regulator· Dual Mode Switching/Linear 5.0 V Regulator· Supervisory ...

MC34921 Data Sheet

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Part Number:
MC34921
Supply Ability:
5000

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  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Upload time: 2024/11/27

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Product Details

Description



Features:

· Two Functionally Identical Pulse-Width Modulated (PWM) DC Motor Drivers
· ·One Switching, One Linear, and One Dual-Mode Regulator
· Dual Mode Switching/Linear 5.0 V Regulator
· Supervisory Functions (Power-ON Reset and Error Reset Circuitry)
· 8-Channel, 8-Bit Analog-to-Digital Converter (ADC)
· Charge Pump for High-Side MOSFET Drive
· Complete Support for Analog Quadrature Encoder
· Pb Free package is designated by suffix AE




Pinout






Specifications

Rating Symbol Max Unit
Input Power Supply Voltage
IB+ = 0.0 A		 B+ -0.3 to 38 V
Logic Input Voltage VIN -0.3 to V5.0+0.3 V
Boost Supply Voltage VBOOST B+ +15 V
Input Power Supply Ripple Voltage
Ripple Voltage Measured at < 20 MHz		 VRIPPLEB 400 mVPP
Motor Drivers A & B Maximum Output Voltage VOUTMAX 40 V
5.0 V Linear Regulator Maximum Output Voltage
Startup		 V5.0 5.4 V
5.0 V Switching Regulator Maximum Output Voltage
Startup		 V5.0 5.4 V
3.3 V Switching Regulator Maximum Output Voltage
Startup		 V3.3 3.6 V
VCORE Linear Regulator Maximum Output Voltage
ICORE = 0.0 A		 VCORE VCORE_NOM+10% V
Motor Drivers A, B, and C (Motor Driver C Configured as Step Motor Driver)(1)
Motor Driver A Sink or Source Current
Motor Driver B Sink or Source Current
Motor Driver C Sink or Source Current		 IPWM(A)
IPWM(B)
IPWM(C)		 ±4.5
±4.5
±1.5		 A
Motor Driver C in Step Mode Step Motor Output Current
Output x or x On		 ISTEP 2.0 A
Motor Driver C in Step Mode Standoff Voltage
Output Off, IDSS = 10 mA		 VBVDS 60 V
ESD Voltage(2)
Non-Operating, Unbiased, Human Body Model
Machine Model
Charge Device Model		 VESD ±2000
±200
±250		 V
Notes
1. B+ = 34 V, Motor Stalled and Saturated
2. ESD testing is performed in accordance with the Human Body Model (CZAP = 100 pF, RZAP = 1500 ), the Machine Model (CZAP = 200 pF, RZAP = 0 ), and the Charge Device Model.




Description

The 34921 power IC integrates multiple motor drivers, multiple power regulators, and most other analog functions a small consumer motion-enabled product needs. The 34921's circuitry is fully protected with current limiting, short-circuit shutdown, over-temperature, overvoltage, and under-voltage detection. Supervisory functions can be read and programmed through a 8-MHz Serial Interface.

A 5.0 V dual-mode (linear or switching) voltage regulator, 3.3 V switching buck regulator, and a voltage-selectable (1.5 V, 1.8 V, 2.5 V) linear regulator provide power management. Two H-Bridges and a configurable motor driver are provided for controlling two dc motors and one unipolar stepper motor.

The highly integrated 34921 brings together sensing,\ communication, power management, system protection, and motorcontrol in one device.






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